Sn

Tin

Identification

CAS Number: 7440-31-5

Discoverer: Known to the ancients.

Properties

Atomic Mass: 118.71 →Density: 7.287 g/cm³ →

Crust Abundance: 2.3 mg/kg

Crystal Structure: TET

Atomic Dimensions

Atomic Radius: 145 pm →

Atomic Radius (Rahm): 248 pm

Covalent Radius: 139 pm →

Van der Waals Radius: 217 pm

Metallic Radius: 142 pm

Atomic Volume: 16.3 cm³/mol

Lattice Constant: 5.82 Å

Thermodynamics

Melting Point: 505.1 K →Boiling Point: 2543 K →Specific Heat: 0.222 J/(g·K) →Thermal Conductivity: 66.8 W/(m·K) →Heat of Fusion: 7.07 kJ/mol →Heat of Vaporization: 296 kJ/mol →

Heat of Formation: 301.2 kJ/mol

Electronic Structure

Electron Config: [Kr] 4d10 5s2 5p2

Block: p

Period: 5 →Group: 14 →Electronegativity: 1.96 →Electron Affinity: 1.112067 eV →

Oxidation States: +2, +4

Abundance & Geochemistry

Crust Abundance: 2.3 mg/kg

Sea Abundance: 0.000004 mg/L

Goldschmidt Class: chalcophile

About

Silvery malleable metallic element belonging to group 14 of the periodic table. Twenty-six isotopes are known, five of which are radioactive. Chemically reactive. Combines directly with chlorine and oxygen and displaces hydrogen from dilute acids.

Isotopes

Sn-120 120 32.58%

Sn-118 118 24.22%

Sn-116 116 14.54%

Sn-119 119 8.59%

Sn-117 117 7.68%

Sn-124 124 5.79%

Sn-122 122 4.63%

Sn-112 112 0.9700%

Sn-114 114 0.6600%

Sn-115 115 0.3400%